BLM18BD121BH1D Filters

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Ferrite beads are widely used in electronic modules to reduce and control electrical interference and noise. The BLM18BD121BH1D model is a common ferrite bead from Murata Electronics. The main purpose of this ferrite bead is to reduce EMI interference caused by high frequency signals.

The BLM18BD121BH1D is a ferrite bead chip which has two terminals. It has a high resistance to high frequency signals such as radio and television signals, and is used to reduce the effects of EMI on connected circuits. It is also used to reduce conductive surge voltages and noise emission of connected circuits. The BLM18BD121BH1D can be used in a wide variety of applications such as, for example, in the automotive, computer, audio, and mobile device industry.

This ferrite bead has a maximum operating temperature of 125 ˚C, with a maximum rated power of 20 W, and a maximum rated voltage of 400 V. Its impedance range is 5 Ω ~ 150 Ω, with a self resonance frequency of 890 MHz and a suppression peak of 1.16 GHz. It is composed of a ceramic core material which serves as the conductor and the insulator. The core material is wrapped in a metallic layer to reduce electrical and EM emissions.

The working principle of the BLM18BD121BH1D ferrite bead is simple. It works by limiting the amount of electrical current passing through the connected circuits, thus reducing electromagnetic interference and radiated emissions. This is achieved by using a high-frequency resonance phenomenon to convert high-frequency signals to low-frequency signals. This conversion is achieved by the magnetic properties of the ferrite core material. The metallic layer of the bead serves to reduce the effects of the high-frequency signals on the connected circuits, which ensure optimal performance.

The BLM18BD121BH1D ferrite bead is widely used in electronic modules to reduce EMI interference caused by high frequency signals. Its ceramic core material and metallic layer allow it to absorb electromagnetic interference and reduce electrical and EM emissions. It is a common and reliable choice for EMI protection and is used in a wide range of applications.

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